Table 3.
Nucleotide and deduced amino acid sequence identity based on M genes of PEDV strain from central China with reference strains (%)
| Group | 15 strainsa | Group 1b | Group 2c | Group 3 | |||
|---|---|---|---|---|---|---|---|
| Group 3-1d | Group 3-2e | Group 3-3f | Group 3-4g | ||||
| 15 strains | 95.9–98.8 | 96.5–98.4 | 96.9–98.2 | 98.4–99.1 | 97.2–99.6 | 97.8–100 | |
| Group 1 | 94.7–98.7 | 96.8–98.5 | 96.0–98.2 | 96.6–99.3 | 96.5–98.6 | 96.1–98.8 | |
| Group 2 | 95.6–88.7 | 95.6–99.1 | 96.9–98.5 | 97.2–98.2 | 97.1–99.3 | 96.7–98.8 | |
| Group 3 | |||||||
| Group 3-1 | 95.6–98.7 | 95.2–98.2 | 96.0–99.1 | 97.7–98.2 | 97.4–98.4 | 97.2–98.2 | |
| Group 3-2 | 97.4–99.1 | 96.9–99.6 | 96.9–98.7 | 96.9–98.7 | 97.9–99.0 | 98.5–99.1 | |
| Group 3-3 | 96.5–99.6 | 95.2–99.1 | 96.0–99.1 | 96.5–99.1 | 98.2–99.6 | 97.5–99.9 | |
| Group 3-4 | 97.8–100 | 95.6–98.7 | 96.4–98.7 | 96.9–98.7 | 98.7–99.1 | 97.8–99.6 | |
Data in upper right and lower left table fields indicate percentage of nucleotide and amino acid sequence similarity, respectively
a 15 PEDV strains from central China in this study
b Three Thai strains (M_NIAH1795_04, M_NIAH2013_95, M_NIAH380_98) from 1995 to 2004, Vietnam VN103M2 strain and Chinese DBA1 strain
c European strains (CV777 and Br1/87) and Chinese LZC strain
d Four Korean strains (CPF531, V2501, M2227, M1595) and two Chinese strains (QH, LJB/03) from 2003 to 2005
e Chinese QYA1 strain
f Two Korean strains (KPEDV-9, Chinju99) from 1997 to 1999, Chinese GDYD strain and Japanese JMe2 strain
g Six Chinese strains (HB/FN, DX, BJ2010, GDYA, HB/QY, GDST1) from 2007 to 2011, two Thai strains (08RB03, M_NIAH116099_07) from 2007 to 2008 and Korean CPF299 strain